High-potential transformer.



N0. 880 ,838. .PATENTED-EMAR. 3, 1908.

0. H. THORDARSON.

"HIGH BLHLBTTIAL TRANSFORMER.

APPLIOIATION FILED APB.17. 1905.

3 SHEETSSK IHET -1.

5 6 @Y/WW PATENTED MAR. 3, 1908. t

m f m J w m .w/r, rm im 4 f 0, VH-TTHORDARSON. HIGH POTENTIALTRANSFORMER.

APPLIGATIONFILED APR.17. 1905.

No. 880,838. PATBNTED MAB. 3. 1908.

v e. H. THORDARsdK, HIGH POTENTIALTRANSFORMER;

v APPLIOATION'FILED APE. 17. 1905.

3 SHEETS-SHEET 3v ugiwuuguuuga 1 S i lll lli llllllll Willi lllil l l i U TED STATES PATENT .oHEsTER n. rnonnnnsionfor' onroAco, ILLINOIS;

1T0 all whom'it may concern.- i I Be itknown-that; ILCHESTER'H. THon-' nAnsoN, acitizen of the-United .States, resid'-= ing at Chicago; in the-county' of Cook and which 'is simple an eflicientihsulation is provided.

' if menro'rmirrjsi'rnsnsronnnn;

State of IlllIlOiS, have invented a new and useful High-Potential Transformer, of

the following is. aspecification.

This invention, relates tohigh potentia transformers.

- The object of theinventi'on is toprovide a construction of h potential transformer efiicient, and wherein Other obects of the inventionwill appear more fully ereinafter. i

The invention consists substantially in the construction, combination, location and arrangement of parts, all as will be more fully hereinafter set forth, as shown in the 'accompanymg drawings, and finally pointed out in the a p'ended'claims.

Re erring to the accompanyingdrawings, and to the'various views and reference signs appearing thereon,'F' e 1 -is a view,

partly in side elevation and partly in' verif tical central section, of a construction of high 3 is an end view of the frame.

potential transformer embodying 1 the principles of my invention. Fig. 2 is a view in C vertical transverse section on the line 2, 2,

Fig.1, looking in the direction of-the arrows.

v Fig. 4 is oken detail view in vertical, longitudinal 4 section of .a portion of the, secondary wind fings or coils, showing the manner of sppporting the same.- Eig. ,5 is a broken-det view in'plan of one of the setsof seconda 'coils or Fig.6 isa broken detail view in'transverse'section of a secondary coil or Fig: 7 isa detail view in transverse section of one ofthelayers of composing a secondary coiL; r g

The same part is designated by the'same reference sign Wherever it occurs throughout the several views. Y H H e In out my invention I propose to employ a framework forming a magnetic circuit, and comprising a base upon which,

and adjacent. ends thereof, are supported end pieces, the latter forminghsup orts for a transversely extending bar, t e w ole jwhen assembled forming a substantially rectangular frame. The top and base portionsjas well as the end portions, are formed of plates of magnetic'materiahsuch, for instance, as

. iron, placed flatwise suitably bolted or clamped together, the end against each other and however, being 'wholl independent of each v ."1 i .Patented March 3, 1908. Application filed Aprill'l. 1905. .Se'ri'n11To. 256.892- i and 195mm pieces of the frame,

other andcapable '0 {being removed from aeach other-thatis,- without any'means of attachment to each other,- the end pieces restin'gploosely endwise upon the base portion, with the laminations composing theend ieces resting inss'urface contact with the I aminations composing the base portion,

'similarlythe top portion ef the frame ifest ing loosely upon t e upperends of the end pieces with. the laminations of'said partsrespectively. contacting with each th an p the op part or cross-bar I l transformer coils, being the special 0 j ect of the present invention to rovi'de. an exceeding y efficient lii'gh' power transformer.

Simple :but

In the accompanyingdrawings, reference. signA designates the'base part of the frame '10; primary and secondary, it, y

.work, B and C the end pieces, and D the top piece orcross bar. The structure of-each of f u these 'parts is'substantially the same,-and 8.

description of 'one will apply to'all; Take, for instance,- the base part A'." This part" comprises a series of iron. plates E, *placed' .flatwise theone upon the other, and'suitabg i clamped: or bolted wbetween side ,The lates or laminations E are lengt in oups, and the groups separated ;from eac other throu hsu table'intel'spersed spacing-blocks G. The end pieces B O are of similar construction. and arrangementf'except that the clamp-plates t ereof-.are" of greater len th than 'the 'plates or laminations' composing-said end parts, thereby. af

fordingmeans, when thefp'arits are'jass'em led, '95

for properly holding 'and .the parts with respect to each vother, the lower ends ofthe. clampplates-H.o'fthe end piecesst'radlates' and if desired they *In'aybearran'ged fit dling over the laminatedbody of thelbase,

and the upper-ends of'the clamp-plates H 00 forming a ,fork orcrotch .in which 'are re- -ceived the .endsof the top art D. In practice the In The" top or crossbar l) constitutesand forms the core for the transformer coils.

1 These coils, both primary and secondary,

e ticbodies 0 the top'and base parts and o the endparts are of equal transverse dimensions. ;l Y

Suitably sleeved upon the core -D is a cylinder of heavy insulating material, V

. the core. Upon this cylinder. of insulating though I do not desire to be limited or re-.

material, beginnin at a point about the transverse medial Iine thereof and extending. tothe respective ends thereof, I apply primary coils. In practice I emplo only a single layer of coils inthis win ing, al

stricted in this respect, and ordinarily, but Without being limited or restricted thereto, I employ for each winding siX wires, vindi- '.cated at K (see Fig. 4), placedin parallel relation with each other, and spirally wrap.- ped around the insulating cylinder J, beginning at a point adjacent the transverse medial line of the insulating cylinder and continuing in a single layer froinsuch medial line to the respective ends of the insulating cylinder. I employ terminal connections I 2 LM N, the terminal connection K being soldered or otherwise connected electrically to the inner ends of the primary coil K which are applied to one end of the insulating cylinder; while theterminal connection L is connected electrically at the point P with the extreme. outer ends of the primary'coils; and similarly, the terminal connection M is in electiica connection, by soldering or otherwise, with theinner e'nds'of the primary coils comprising the winding applied tothe other end of the insulating cylinder; while terminal N is similarly connected to the extreme outer ends of said primary coils at the point marked E, Fig. 1, the terminal connections being led in suitable or convenient relation for proper connection to the leading conductorsof the circuit to be fed from the transformer, and it is obvious that these terminal connections may in'practice be coupled together in any suitable or convenient relation'with respect to each other, according to the work to be performed or the duty re- %uired. Suitably inclosing the conductors or the primary coil composed of such con ductors, is a heavy insulating cylinder or casing S. Suitably supported upon, and in encircling or concentric relation with respect to, coils K and core D, are the secondary coils. These coils are of special construction and design, as will more fully appear here after, and are arranged in sets of increasing diameter from the medial line outwardly toe wards", the end of the core, as most clearlythe core and insulating sleeves J and S, these coils being sleeved upon heavy insulating rings or cylinders A.

nient, varying from each other merely in diameter; and similarly, the various sets of coils are identical with each other except-as to their diameters and the manner of sup-.

The secondary coils are all of the same construction and arrangeporting the same. Therefore, a description of one coil and of .one set of coils will answer for a description of all, the coils and sets. Each coil is composed of a single layer of conductors in the form of a wrapping, indicated at B, Fig. 7. This layer is applied to a band of'suitable insulating material, indicated at C, which if desired may comprise merely a ring of paper, which, however, possesses the characteristic of having the edges thereof folded or bent back upon the main body portion, as indicated at 1), Figs. 6 and 7, thereby forming in effect a slight depression or seat between the edges of the folded portions to receive the winding B, said folded edges serving to prevent the lateral displacement of the coils B. A de- I sirable number of these wrappings or windings in the form of rings are assembled the one upon the other in inclosing relation to form a secondary coil, as clearly indicated in Fig. 6, the paper rings C separating the successive secondary coils.

A series of coils constructed as above described are assembled along-side each other to form a set of secondary coils, but \iith suitable insulating disks lt" interposed-between adjacent coils of each set. In practice I prefer to employ insulating disks E for each set, of greater diameter than the exterior diameter of thecoilscomposing such set, in order to more thoroughly insulate the coils from each other, and to avoid danger of sparks occurring between adjacent coils underthe high electrical tension or pressure developed. To the same end, each coil is wound upon a metal ring F and is inclosed nithin a corresponding metal ring G. The object of these metal rings is to afford means for supporting the coils and holding the same rig-idlyin proper shape, and also to protect the metal of the coil viindings from burning out in case of arcing or sparking, and further, to afford means for coin'iectiiig up adjacent coils in circuit nith each other through the metal conducting strips indicated at A", Fig. 4:, and passing diagonally through the-insulatin disks E from the rin 6 of one coil to other, or, rather, from the interposed insulating disks E. This may be accomplished in many specifically different ways. I have shov. none simple and efiicient manner of accomplishing this object, herein I apply around each coil and transversely thereof, at suitable intervals, a rapping of thread or cord, indicated at ll. These thread or cord wrappings not only serve to hold the c0nductors composing the individual layers of the coils, and their interposed paper rings C, in proper shape, but they also serve to slightly off-set the coils from the adjacent insulating disks E, thereby forming spaces bei tween the coils .hnd'the insulatingrdisks of the same 'set'i Asgabove'stated:thejrarious sets of coils gee of subst'antiallyidentical constructlOH QIi g rial-members thereof, except that, 'i; eginning with. the inner set, the various succeeding The sets of uPbn the insulating'cy S hidh ind-0843s the primary vindings K, and carried by' th e periphery of the insulating segment plated,

at suitpbly spaced distances apart, are'plat e's K of lnsulatingmaterial, and extendlng in} 'transyerse relation with respect to the segsecondary coils; In practice the-insulating meht JQand, as shown, seated in transverse" peripheral jgrooyes in the segment plate.

Suitably supported'by these plates K are blocks;1/-whi serve as supports for the disksrEfrvhich areinterpos ed betw ee'nindividnal "coils composing the sets, rest and are supported upon the transverse supporting: plates K,- whereas. the coils themselves rest and are supported upon" the block s L Thus the insulating disks are not only of greater-exterior diameter than the coils be?" 5 tvs een which they are placed,but.in the case of the coils o'flarger d ameter, said insulating disks are "of smaller interior diameter than said coilsj therebyi affording efficient insulation-between adjacent coils, In practice the proximate coils ofadjacent sets are formed lDtO one'coil, as -indi'cated at M, though I do vnot desire tobe limited or restricted in this accordance'with my inventiom-Iso design and proportion and relatively arrange the "parts that the space between the extremeioliter orend coilsand the end pieces B C of-theframe isfsubstantially the sameas ,the,. di'stance or space between said coils andthebase portionA of the frame, and I ropose to soregulate the insulation of each- V v ayer oteach coil, and between adjacent @Mcoilsiof each set, and between adjacent sets of' eoi1s',[ fas that the combined insulation. thereofifromtheextreme outer to the extrrne inner coil at each end of the core,'is.

'faboutfequal. to the insulation afforded by- "ductor layer and its inclosing insulating i of the machine, I ma the space or gap between the extreme outer oilsi nd h S da the 60' i l I i i frame J In order that the transformer may be re-:

moved bodily'with its core D from the frame cated at N) aroundt e core and t e cohaaa a gelation with'respect to the individ- Jeff the separation goftli cqmpo sing *each' set do not desire-to be'lirnite this respect, as other materials might well ported upon said core.

pass a stra "(indisleeve the medial line: thereof, and provide such strap, with a hook P, thereby enabling this entire part sof the'apparatus.

to be bodily removedg i lt isde'si ned to immersejtheentire' apparatu's" in oiI during the practical operatlon thereof, and from theforego'in description it -y'vill be seen that byreason'o the-spacing blocks Ginterspersed,throughout the ;lam i.-

nations composing the baseand core parts "A 'D and the endpieces, 1B C, .and by reason individintl coils rbm w et d y reason. of. the eculianrn'anner ofsup'porting the setsof coil s of larger;.diameter as above described, provisionlisymade for the oil to thoroughly enter; rbetweenf-"and circulate around-every part of the apparatus, thereby {affording addltional'i-nsulation, andin this ,manner the'wrappin'gjthread or cord H, as

well as the paper ring'C, become impregnated with oil, thereby increasing the insulatin effect thereof-. v f: .Wfiile'l have specifiedf"- aperrings C, I or restricted in 'answer' the' urpose.

. ;I t; is ,obviou's-thao'many variations and changes in the details of"construction and arrangementjvould readily occur to. ersons skille ".in -flthe art and still fall -wit the s irit and 'scope of my invention; I do not esire, 'therefore, tobelimited or restricted .to the exact details shown "and described.

F 'aving"now set forth the object and nature of my invention, ,and a construction embodying the rinciples" thereof, what I claim as new'an usefuland of my own in vention, and desire to secure by Letters Patl In a high potential transformer, a frame comprising a laminated base, laminated tend pieces resting thereon and acore resting upon said'end pieces, and transformer coils carried by said core.

' 2. a high potential transformer, a frame.

comprising a magneticbase, and magnetic 'end pieces restingendwise thereon, and a; magnetic core supportedby said end! ieces,

in combination, [with I transformer .vcoi

3. A high potential transformer comprise .ing'a rectanfgularframe,"one of thejside.

iecesi thereo forming a core-and the {other orrning a base, the end partsresting freelyv endwise upon the base part and freely su' e porting the core part, and transformer cols encirch-ng the core'part.

4. In a high potential transformer, a, magnetic frame including-a core',ftransformer f Y coils encircling said core, said coils being respectively equally distant frorrithe end and base ortions ofthe frame,

5. n a high potentialtransformer, a frame resting upon said end greater length than the magnetic part, the.

ends of said clamp plates embracing respectively the base part and the core part, and

transformer coils-encircling the core part.

7. In a high potential transformer, alaminated magnetic base, core and end .parts forming a frame, spacing means interposed in said laminated parts, and transformer coils encircling said core part.

S. In a high potential transformena core, a primary winding applied thereto and a secondarya winding increasing in diameter from a transverse medial line, and terminal connections for the respective ends of said primary winding.

9. In a high potential tr: .isformer, a laminated core, a primary winding applied thereto from the transverse medial line towards the respective ends thereof, and terminal connections for the respective ends of each winding.

10. In a high potential transformer, a

magnetic core, an insulating sleeve inclosing. the same, primary windmgs'applied from a transverse medial line and in a single layer toward each end'of such core, medial terminal connections for the respective ends of each winding and secondary windings increasing in diameter around said primary winding.

11. In a'liigh potential transformer, a

laminated core, primary coilsapplied thereto, but insulated therefrom, from a transverse medial line towards each end thereof, terminal connections for the respective ends of said primary coils, and secondary coils encircling said primary coils, but insulated therefrom, said secondary coils being of in creasing diameter towards the respective ends of said core. r p

12. In a high potential transformer, a core, a primary wrapping applied to each end of said core from a transverse medial line, and a series of secondary coils concentric with said core but of increasing diameter from the transverse medial line of said core towards the respective ends thereof.

13. In a high potential transformer, a core, a primary wrapping applied theretofrom a transverse medial line towards the re-' spective ends thereof, a series of secondary coils supported in concentric relation with respect to said core and primary wrapping and arranged in sets, said sets of secondary coils bemg of increasing diameter from the l l l sso,sss

transverse medial line of the core towards the respectiveends thereof.

14. In a high potential transformer, a core, a primary wralpping appliedthereto, and a secondary coi encircling said wrapping but insulated therefrom, said coil comprising successive layers of spirally wrapped conductors, and insulating rings interposed "between said layers.

15. In a high potential transformer, a

' core, a rimary wrapping therefor, a second enclrclmg said wrapping andcore ary cm and comprising a plurality of conductor layers, an insulating ring interposed between each secondary layer, said rings having the edges thereof turned or bent back upon themselves to maintain the conductors of the layer in proper relation.

16. In va high potential transformer, a core, a primar wrapping therefor, a secondary coil encirc ing said core and primary and including insulating rings and interposed sec ondary' layers, and an insulator interposed between successive secondary layers. I

-17.'In a high potential transformer, a core, a primary wrapping applied thereto, and a secondary coil encircling said core and wrapping, said co'il built up of successive conductor layers and interposed insulating rings, said rings having their edges bent or,

folded back upon the body thereof, and servingto maintain the conductor layers in pro e'r relation, and means for insulating sai coil.

18. In a high potential transformer, a core, a primary wrappingapplied thereto, and secondary coils encircling said core and wrapping, and arranged in sets, and insu latmg dislrs interposed between the members of each set of coils.

19. In a high potential transformer, a core, a primary wrapping applied thereto, and secondary coils encircling said core and wrapping, and arranged in sets, insulating disl'sinterposed between adjacent members of each set of coils, said disks being of greater extlerior diameter than the diameters of the 01 S.

Y 20. In a high potential transformer, a core, a primary-wrapping applied thereto, secondary coils encircling said core and ,wrapping, eachcoil having'a'wrapping of thread or'cord applied thereto at suitable distances apart, and insulating disks interposed between adjacent coils. i f 21. In a high potential transformer, a core, a primary wrapping applied thereto,

and secondary coils encircling said core and wrapping, and meansfor supporting said coils concentric with'said primary and core comprising a segment plate and supporting plates carried thereby at the periphery thereof, said supporting plates serving to support said coils.

22'. In'a high potential transformer, a

core, and meansfor supporting said 0011 concentric with said primary and core, comprising a transversely extending segment plate, su porting plates carried at.the periphery t ereof, and blocks carried by said supporting plates, upon which said coil is supported.

23. An electric transformer, comprising means for producing avariable magnetic field of force, and a winding in the form of two hollow substantially truncated-conical sections symmetrically arranged in said field of force.

p 24. An electric transformer comprising a core, a primary w nding thereon, and a sec-' metric ondary winding in the form of two sym hollow truncated cones, with their. a exes meeting approximately the longitudina center of the core. 1

25. An induction coil, comprising a laminated iron core, a tively coarse wire t ereon, and a secondary winding of relatively fine wire in the formof.

two symmetric hollow cones serially con- 'nected, and with their sides converging towards the magnetic center of the core.

26. An induction coil, comprising a core, a primary winding thereon, an insulating tube about said primary winding, and a sec ondary winding" in the formof two hollow truncated cones with their sides converging towards the magnetic center of said core, said coges being supported upon said insulating tu e. 1

27. An induction coil, comprising a laminated iron core, a primary winding thereon,

rimary winding of rela-;

stantially the lane 0 and a secondary winding in the form of two symmetric hollow cones with their axes coinciding with the longitudinal axis of the core, and with their apexesnieeting in the magnetic neutral plane of said 'co're.)

.28. An induction'coil, comprising a core, a primary winding thereon, and a secondary winding in the form of two substantially cone-shaped sections symmetrically ar ranged in themagnetic field of force of said core.

29. An induction coil, comprising a core, a primary winding thereon, and a secondary winding in two. sections having a common center in approximately the plane of the magnetic center of the core, the convolutions of said sections progressively diverging from each otherand from the core.

30. An induction coil, comprising a core, a primary winding thereon, and'a secondary winding in the form of two hollow truncated coneswhose interior and exterior walls are substantially parallel, said cones being arranged with their apexes meeting in sub- .the magnetic center of said core, an with their windings serially connected.

31. An induction coil, comprising a core, a primary winding thereon, and a secondary winding in two sections the convolutions-of which progressively diverge from each other and from the core. r In witness whereof, I have hereunto set my hand this 14th day of April 1905, in the presence of the-subscribin Witnesses.

CHESTER H; HORDARSON. Witnesses: v

' E; G. SEMPLE,

S. E. DARBY. 

